Lamp-holder.



T. B. MONGSMITH.

LAMP HOLDER. APPLICATION FILED JUNE 1, 1909.

Patented Jan. 10, 1911.

THOMAS B. MONOSMITH, F BAY CITY, MICHIGAN.

LAMP-HOLDER.

Specificationof Letters Patent.

Patented Jan. 10, 191.1.

Application med-June 1, 1909. Serial No. v4993.51.

To all whom it may concern:

Be it known that I, THOMAS E. MONO- SMITH, a citizen of the UnitedStates, residing at Bay City, in the county of Bay and State ofMichigan, have invented certain new and useful Improvements in 'Lamp-Holders; and I do hereby declare the followiing to be a full, clear, andexact description also in vaults, closets and the like where acontinuously burning light is not necessary. The invention is alsoadapted for use on motor vehicles when it is necessary to inspectaniirepair the mechanism.

One object of my invention is to provide a device of this nature whereinthe strain is taken up by the holder and cord, to avoid theimPOSltIOILOI excessive strain upon the lamp socket in the holder.

Another object of my invention is to provide a holder which does notnecessitate the soldering of the reflector to the holder.

Another object of my invention is the provision of novel means r firmlyconnecting the cord to the holder without injury to the cord.

Another object is the provision of means for preventing the twisting ofthe connecting cor'd;

A still further means isthe provision of a neat, 'si'mplb article ofthis description, which is easily taken apart for inspection andadustment sembled.

To these and other ends, my invention consists in certain novel featuresand com-- binatio'ns such as will be morev fully describedhereinafter'and particularly pointed out in theclaims.

In the accompanying, drawings, Figure l is a perspective view ofmy'invention, Fig. 2 is a longitudinal sectionalyiew, Fig. 3 1s a detailperspective view of the clamping jaws disassembled, Fig. is an end viewshowing the nipple with its ribs, and Fig. 5 is ;-and which may bereadily reasof Fig. 2, and Fig. 6 is an enlarged lon itudinal sectionalview of the clamping e vice.

Heretofore lamp holders for exploring purposes have been so arrangedthat the strain caused by the operator in poking the lamp into darkcorners, has been sustained by the lamp socket to which the circuitwires are soldered. The objection to this is that frequently the socketis damaged, the wires pulling 'out of the socket and considerableexpense incurred in repairing the construction.

It is my endeavor to simple lamp holder whic inexpensive and wilfulfilevery requirement.

Referring to. the drawings, A indicates the lamp holder which may bemade of any suitable material as gutta-percha, for instance, and ofanysuitable shape. In the present instance I have. shown such holder asbeing of the usual bell shape, the apex of such holder having affixedthereto a hollow nipple 1, the free end of which is exteriorly threaded.The hollow nipple communicates with the interior of the holder, the boreof the nipple being preferably rov-ided with a plurality of ribs 2, 2,upon t e inner ends of which is supported the end of the independentlyof and attached to the bell. In order to remove the strain caused in theuse of this lamp holder, from the lamp socket 3, I provide the co-actingclamping members are provided with convex tapering outer faces and flatinner faces. One of the clamping members 4: is provided with a recess 5in its flat inner face, the opposing flat ,ribs 2, 2, in the nipple toprevent the rotation of the clamping members and one or both of theinner fia't faces ofthe clamping members may be grooved a at 8, toreceive the cord 9 leading from the lamp socket 3to' any suitable sourceof power. In order to retain the clamping members tightly clamped uponthe cord 9 'to prevent the provide a practical lamp socket 3. The nipplemay be formed a detail cross-sectional view on line a2.a

members 4:, 4. These co-acting clamping face of the other clampingmember being strain from being transmitted by the cord to the lampsocket, 1 provide the sleeve 10 hav- 3 ing a tapered bore, one end ofwhich is interiorly threaded and adapted to be received 1 upon thethreaded end of the nipple 1. 3y screwing such sleeve down upon thenipple, the reduced portion of the bore of the sleeve is brougnt intoengagement with the convex ccptacle A, the tube 1, and the sleeve 10,the tube and sleeve. serving as a handle) with a flange 16 which inclient, permits the structure to be nscdas a hand rest on which to windthe cord'tl. 'lhe. tlange prevents the cord wound on the handle 'l'romslipping faces ot the clamping members to squeeze 1 them snugly togetherupon the cord 3) and thereby prevent any strains from being transmittedto the lamp socket.

By providing the clamping members with the tenons 7 received in thesockets formed between the ribs 2, l prevent the clamping off andtangli'ng. notch 11' is formed in the periphery of the flange to receivethe cord which is wound on the handle, the tree end of the cord beinginserted through an aperture 18 which prevents the cord from unwinding.

members from being rotated as the sleeve is screwed into position andthus avoidtwisting the cord which would result in injuring itsconnection with the lamp socket.

tenons 7 may be of less length than the ribs tainer of any suitabledescription, not

shown, and removable therewith, or such reflector may be otherwisesecured within the flaring end of the holder.

The lamp is easily removed when burned Thenotch prevents the. cord fromslipping around the flange.

From the foregoing it is evident that I have devised a most simple andiuexpensive lamp holder for the purposes set. forth andone which iseasily assembled and disassembled for repairs or inspection, and it- ISobvious that changesmlght'be made in the torm and ar angement oi theseveral parts described without departing trom the spirit and scope ofmy invention.

Having thus fully disclosed my invention,

5 what I claim as new, 1s:

out and the nipple and sleeve serve as a handle which is grasped by theoperator,

such handle being virtually solid and hence strong and rigid.

The inner end of the lamp socket is snugly seated on the inner ends ofthe ribs to prevent its vibration in the holder, being held in its seatby the tension on the cord. Such tension is not increased during the useof the lamp, however, owing to the clamping means which maintains thecord stretched between the lamp socket and the jaws. It is obvious thatthe cord might be twisted in removing and replacing the lamp 12, toprevent which I preferably groove the inner periphery of the nipple asat 13, to receivg a key 14, such key b fng usually formed by the solderbywhich one wire of the cord is connected to the socket. 3. Thismaintains the socket against rotation when thelamp is being removed andreplaced. I may also interpose a gasket or washer 15 between the innerend of the lamp socket. and its apei tured seat; to absorb shocks orjars and prc vent undue strain from bein )laced on the connections ofthe lamp cord therewith. Thus, by means of the clamping aws and the keyand key scat',.I have reinforced and strengthened the weakest points offormer exploring lamps.

I prefer in some casesto equip the handle ortion of my lamp holder(which in this instance consists of the enlarged lamp re- 1. A lampholder comprising a lamp-receiving receptacle, a tubular memberconnected therewith and adapted to receive a lamp socket and cord,clamping members between which the cord is received, the inner face ofone ofthe clan'iping members being recessed, the inner abutting face ofthe remaining clamping member having a ridge extending thereaerossopposite the recess in the first-named clamping member, the inner faceof at least one of the clamping members being grooved to receive thelamp cord, and means removably connected to the tubular member andsurrounding the clamping members to retain them snugly upon the cord.

2. A lamp holder comprising a lamp-receiving receptacle, a tubularmember connected therewith and adapted to receive a lamp socket andcord, clamping members between which the cord is rtareived, the clampingmembers provided with teuons receivable in sockets formed in the tutmlarmember, the lamp cord received between the clamping members, and meansremovably receivable on the tubular member and encircling the clampingmembers to clamp them upon the cord.

3. A lamp holder comprising a. lamp-receiving receptacle, a tubularmember connected therewith and adapted to receive a lamp socket andcord, clamping men'ibers between which the cord is received, a recessedseat formed in the tubular member for the'lamp socket, tcnons on theclamping members receivable in the seat, and means removably receivableon the tubular member and encircling the clamping members to snuglyclamp them together on the lamp cord.

4. A lamp holder comprising a lamp-remenn oi I soeizet seated elan'ipingmembers, one end member. comrihs n the tubular on the inner ends of theribs. of each of which is received in the tuhnhu' member and heldlreling the clamp them together on combination with :1 lamp, cord 5. Inlamp holder, 5 the lamp hel :ted to receive 7 abutting tnces, l0receivable on the e lamp cord between and means ren'iovahly tubularmember and en- I i i i the clamping members;

clamping members to snugly the lamp cord.

and a threaded nipple secured to tlLI, plurality of ribs in the bore ofsaid nipple, gtthreaded sleeve formed with a tapered bore, a pluralityof tapered clamping members received in said sleeve, tenons formed onthe ends of said clamping members and adapted to engage the ribs ofsaid. nipple to prevent rotation of said. members when the sleeve andnipple are screwed together.

.In testimony whereof, I afiix my signature in presence of twoWitnesses.

THOMAS E. MONOSMHTH. Witnesses:

RALPH S. VARFIELD, CHRISTINE A. BRAIDEL.

